Broken axle puller



May 16, 1933. EARL 1,908,829

BROKEN AXLE FULLER Filed Feb. 27, 1932.

'trated' in Patented May 16, 1933 ,umren sir-Ares PAT T oF i cs JOHNLOUIS EARL, or sanleivronro, 'rnXAs, Assrsnoa or one-rourarn 'ro EDWINorv SAN ANTONIO, EXAS" V 7 BROKEN AXLE FULLER Application filed February27 -,.1932. se1a1 No. 595,601.

This invention relates to axle or shaft pulling means. i 1

An object of this invention is to provide a novel puller which may beextended into an axle or shaft housing so as'to withdraw a broken shaftmounted within the housing.

Another object of this invention is to .prov ide in a puller of thiskind mechanical means which is adapted to be used for pulling orwithdrawing the shaft from a bearing or housing where it is impossibleto dispose a clamp or other pulling means aboutthe periphery of theshaft.

Theabove and various other objects and advantages of this invention Wlll1n part be described in and in part be understood from the followingdetailed description of the present preferred embodiment, the same beingillusthe accompanying drawmg, wherem I Figure 1 is a longitudinalsection partly in detail and partly broken away 'ofa shaft pullerconstructed according to the preferred'em bodiment of this invention;

Figure 2 is a detail end elevation of the shaft clamping means;

Figure 8 is a diagrammatic view showing the puller in an electriccircuit.

Referring to the drawing wherein like numerals of reference designatecorresponding parts throughout the several views, the numeral l0designates generally a clamping member which is provided at the outerend thereof with a pair of opposed V-shaped shaft engaging members 11terminating in a flared end portion 13. These shaft engaging members 11are spaced apart and are adapted to have movement relative to each otherso that shafts of various sizes within the limits of the puller can befrictionally or resiliently clamped between the clamping jaws 11.

The inner end of the puller or clamping member 10 is provided with ashank 12 having a threaded bore 14: which is adapted to threadablyreceive an armature 15. This armature 15 has a solenoid or coil 16disposed thereabout, and the armature 15 is provided adjacent the outerend thereof with a nut or collar 17 having a shoulder 18 to receiveFigure 3, is designated ,ofcourse, donotwish to belimited to a battery,as any} suitable. source of current supply member 10. may; be projectedthe tension be suiiicientto withdraw the shaft from the v If.desired,ghowever, the switch .S

a sleeve 19 of substantially cylindrical construction.

- The opposite :or upper end of the armature 15.is also threaded, and anut 20 is threadably mounted thereon and is also provided with ashoulder 21 to engage the upper end of the sleeve 19 and hold the sleeve19 concentrically about the coil or solenoid 16. In this manner, thewindings of the coil will be suitably protected during the use of nut 22preferably engages about the upper end of the armature I5 and locks thenut 20against movement. This nut 22 is provided with peripheral'threads23 and an elongated hollow handle 24 is threadably mounted on the nut22. The ends of the wire of the coil 16 are projected through-the nut20, asat 25, and are also extendedthrough the nut22 and connected. to a'suitable source of current supply which, in the present instance, asshownlm as a battery B, but I,

can be used. A switch'S is interposed in the electric circuit C to whichthe coil 16 is ,con-

nectedrf- In the use of this device, the clamping into-an axlehousing'and if the end of the shaft which is broken extends outwardly ofthe bearing in the housing, the clamping member 10 can'be slipped aboutthe periphery of the shaft, and of the clamping member '11 will housing;can be closed, thereby magnetizing the clamp -10 which,';in thepresentinstance, constitutes an extension .ofjthe armature 15. 'maime'r,an additional frictional means is providedwcoacting rwith the inherentresiliencyf of the clamping armsll'in gripping theshaft which it isdesired-to withdraw from the housing; l

In this In the event the end of the shaftdoesnot project: beyond: the.outer'edge of the bear- 'ing Within which the shaft is mounted, theclamping memberlOdmay be removed from the armature '15 and thearmaturenl5 prof'jected intothe housing'so that ilJ'Will contact -withthe endof the shaft. The switch. Scan the puller. A lock j prising anarmature,

then be closed and the magnetism generated by the coil 16 will hold thearmature into by engagement with the end of the shaft and permit thepulling of the shaft outwardly of the bearing.

It will, therefore, be seen that the shaft puller herein disclosed isreadily adapted for use in the pulling of shafts which can be en] gagedby the clamp 10 orshafts which are broken off to a point where agripping means cannot engage about the periphery thereof. This handle 24can be made of any suitable length so that the puller can be projectedinto any desired axle housing and in like man-,

ner, various sizes of clamping members 10 may be mounted on the armature15.

It is, of course, understood that various changes and modifications maybe made in thedetails of construction and design of the abovespecifically described embodiment of this invention without departingfrom the spirit thereof, such changes and modifications being restrictedonly by the scope of the following claims.

\Vhat is claimed is 1. A broken axle puller as setforth comprising aclamp having V-shaped complementary arms adapted to frictionally engageabout the surface of a shaft, a handle secured to the clamp andextending longitudinally thereof andmeans carried by the handle formagnetizing the arms.

2. An axle pulling means as set forth comprising in combination, anelectric circuit, a coil 1n said circuit, an armature for the 0011,

a handle, means for securing the handle to the armature in alinementtherewith and opposed resilient clamps carried by the ar mature.

3. An axle pulling means as set forth comprising a interposed betweenthe handle and the clamp clamp, a handle, a magnetic means to energizethe clamp, and means for connectmg the magnet to a source of currentsupply.

4. An axle pulling means as set forth comprising an axle gripper, turethreadably engaging the gripper and the handle, and a coil disposedabout the armature to energize said armature and said gripper. I

r 5. An axle pulling means as set forth coma coil about the armature, ahandle, means for securing the bandle to the armature, an electriccircuit with-, inwhich said coil is interposed, a shield disposed aboutthe coil and resilient axle clamps carried by the armature formagnetization thereby. I V

p 6. An axle pulling means as set forth comprising an armature,

signature.

a handle, an armaried by the armature for magnetization there- 7. 'Anaxle pulling means as set forth comprising an armature, a coil about thearmature, threaded collars carried by the armature and engaging againstend of the coil, a shield engaging the collars and disposed about thecoil, a handle secured to one end of the armature and extendinglongitudinally thereof and clamps carriedby the other end of thearmature.

8. An axle pulling means as set forth comprising an elongated armature,a coil disposed about the armature and terminating inwardly of each endthereof, a shield, means engaging the armature and the shield to holdthe shield concentrically about the armature, a handle secured to oneend of the armature, andaxle clamping means carried bythe other end ofthe armature for engagement with a shaft. I

9. A broken axle pulling means comprising an armature, a coil disposedabout the secured to the opposite end of the armature and extendinglongitudinally thereof, said axle gripping means being energized uponenergization of the armature.

10. .A broken axle puller comprising a clamp, a coil adapted to beinterposed in an electric circuit, a core, and means for connecting thecore to the clamp to magnetize the clamp upon magnetization of the core.In testimony whereof I hereunto aflix my JOHN LOUIS EARL.

a handle threadably secured to one end of the armature, acoil disposedabout the armature intermediate,"

the ends thereof, a protecting shield disposed about the coil, andresilient axle clamps car-

